/Engine/Source/Editor/Experimental/EditorInteractiveToolsFramework/Public/EdModeInteractiveToolsContext.h
Call to add a child EdMode ToolsContext created using the above function
true if child was added
bool OnChildEdModeActivated ( [UEdModeInteractiveToolsContext](API\Editor\EditorInteractiveToolsFramework\UEdModeInteractiveToolsContext) * ChildToolsContext )